Machine for cleaning builders&#39; planks from cement



P. SAUSET.

MACHINE FOR CLEANING BUILDERS PLANKS FROM CEMENT.

APPLICATION FILED MAY 1. 1920.

1,390,218. PatentedSept. 6, 1921..

warren stares PETER SAUSET, 01F- BGNN, GERMANY.

Specification of Letters Patent.

Patented Sept. e, rear.

Application filed May 1, 1920. Serial No; 378,240;

To all whom it may concern:

Be it known that I, PETER SAUsn'r, a citizen of the German Republic, and residing at Bonn, Germany, have invented certain new and useful Improvements in Machines for Cleaning Builders Planks from Cement of which the following is a specification.

This invention relates to an improved machine for cleaning builders planks, particularly those used for erecting concrete walls and ceilings, from cement or the like stuck thereto during previous use, without damage to the wood of the planks, for the purpose of using the clean planks again for further building purposes.

The improved machine comprises essentially a pair of rotary working rolls which on their circumferential surfaces are ridged for crushing the cement layers and loosening the same from the wooden plank, which is then brushed off by a rotary steel brush, several pairs of smooth working rollers being located behind said ridged working rolls, which serve to further loosen the cement and at the same time also as conveying rollers for the advance of the plank in the machine, all upper rollers being yieldingly mounted so as to permit of cleaning planks of different thickness in the machine. For cleaning the edges of the plank, small lateral ridged working rollers are provided, which are also yieldingly mounted to suit different widths of plank.

In the annexed drawing:

Figures 1, 2 and 3 are respectively a side view, a plan view, and an edge view, of the improved machine;

Figs. 4 and 5 show one of the ridged working rolls in a side View and edge view respectively, while Fig. 6 shows part of the same in a longitudinal section on a larger scale;

Figs. 7, 8 and 9 show respective corresponding views to the latter, of the small lateral ridged working rollers;

Fig. 10 is a perspective view of the improved machine.

The machine comprises a frame a on which a driving-shaft b is mounted in bearings c. Said shaft has on each end a hand-wheel (Z, by which it can be set in rotation for driving the machine by hand. By putting a transmission-belt from any motor or the like over one of said hand-wheels, the machine can also be driven mechanically. On the shaft 6 a pinion e is keyed which gears with a large spur-wheel f. On the axle of the latter, which is mounted in bearings g on said frame, one working-roller h with ridged working surface is keyed, while above, and in one perpendicular plane with, the latter,

another workin -roller z' with e uall rid ed working surface is located, said two working rollers being horizontally arranged and in gear with one another by means of toothed .wheels 7c, Z. Behind said pair of ridged working rollers h, 2' a pair of smooth working rollers m is arranged on the frame a in bearings a, while behind the latter a pair of small vertically arranged ridged working rollers 0 are mounted on strong springy arms 7) fixed on said frame a. Behind the latter,

another pair ofsmoothhorizontally located working rollers m are mounted in bearings n, and behind the same a brush-roller g with driving-pulley r is located on the frame, which pulley is connected with one of said hand-wheels (Z by means of a transmissionbelt 8. Behind said brush-roller, which is fitted with steel bristles, a third pair of horizontally located working and conveying rollers m are mounted at the end of the frame.

Each pair of bearings g and n have a bridge 25 with a pressure-screw a and a handwheel 11, the lower end of said pressure-screw having a strong blade spring w which acts upon the upper rollers i and m, which thereby are yieldingly mounted so asto lead planks of different thicknesses through said pairs of rollers.

The plank H to be cleaned from cement crusts is led in the direction of arrow over small guiding-rollers 3 to between the ridged working rollers h, 2', and with the cementside down. Said working rollers are ridged as clearly shown at z in Figs. 6 and 9. Said ridges act upon the hard cement and crush the same to small pieces, so that it is loosened from the plank. The cement is then powdered between the pair of rollers m succeeding said ridged, working rollers h, z, the plank is further cleaned from cement at its edges by action of the small vertically arranged ridged working rollers 0, which are yieldingly mounted to suit different widths of plank, the second pair of working rollers m serving, beside as conveying rollers, to complete the powdering of the cement still left on the plank, while the steel brush-roller wnich rotates in opposite direction to the advance of the plank, finally brushes the underside of the plank completely clean, the third pair of Working rollers m at the end of the frame serving as conveying rollers only.

As the plank is generally soiled by cement on one side only, one brushroller only is required for brushing oil the same, though, of course, a second brush-roller may be arranged above the former for brushing the upper side of the plank.

Preferably, on the axle of the bruhh-roller q a circular saw Se may be keyed, for the purpose of cutting the planks to any desired lengths.

Vhat I claim, is:

1. A machine for cleaning builders planks from cement, comprising, in combination, a pair of horizontally arranged rotary ridged Workingrollers, a plurality of pairs of horizontally arranged Working rollers behind said pair of ridged Working rollers to serve at the same time as conveying rollers, a pair of yieldingly mounted and vertically arranged small ridged Working rollers arranged behind said horizontally located pair of ridged Working rollers, a horizontally located steel brush roller behind said vertically arranged pair of small ridged Working rollers, and means to drive the machine, substantially as and for the purpose set 3 "forth.

2. A machine for cleaning builders planks from cement, comprising, in combination, a pair of horizontally arranged rotary ridged Working rollers, a plurality of pairsof hori- 3 zontally arranged Working rollers behind said pair of ridged Working rollers to serve at the same time as conveying rollers, a pair of vertically arranged small ridged Working rollers arranged behind said horizontally 4 located pair of ridged Working rollers, strong, springy arms to carry said pair of vertically arranged small ridged Working rollers, a horizontally located steelbrush roller behind said vertically arrangedpair 4 of small ridged Working rollers, and means to drive the machine, substantially as and for the purpose set forth.

In testimony vvhereof I have hereunto set my hand in the presence of tWo subscribing 5 Witnesses.

PETER SAUSET.

Witnesses J AKOB SCHMIDT, Josnr Rr'irrnn. 

